S-90015A209 1/4"-20 x 2 1/2" ASME B18.6.3 Stainless Steel Oversized Truss Head Slotted Screws
Stainless Steel Oversized Truss Head Slotted Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh environments
- Enhanced load distribution from the low truss head design, reducing surface pressure and material damage
- High tensile strength of 80,000 PSI ensures reliable performance under heavy-duty mechanical stress
- Easy manual installation and removal with slotted drive and fully threaded UNC coarse pattern
- Consistent thread engagement due to Class 2A fit, minimizing cross-threading and assembly errors
- Long-term durability supported by Rockwell B85 hardness, resisting wear and deformation
- Broad industrial compliance meeting ASME B18.6.3, RoHS 3, and REACH standards for safe, regulated use
Professional Applications & Engineering Value
This 1/4"-20 low truss head slotted screw in 18-8 stainless steel addresses critical industrial challenges, such as vibration loosening and corrosion-induced failure. The passivated finish significantly enhances corrosion resistance, making it suitable for outdoor, marine, or chemical-exposed settings. Its low, wide truss head provides a larger bearing surface, distributing clamp load efficiently to prevent sheet metal distortion or plastic cracking. Combined with a fully threaded UNC coarse pattern, it ensures rapid installation and high pull-out strength in wood, plastic, or soft metals. Engineers value this screw for assembly lines, machinery frames, and electrical enclosures where durability, regulatory compliance, and ease of maintenance are paramount.
Specification Summary & Compliance
This screw adheres to precise dimensional standards, including Class 2A thread fit for consistent assembly and UNC coarse threading (1/4"-20) per ASME B18.6.3. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring it is free from hazardous substances. The manufacturing process follows strict quality controls to maintain 80,000 PSI tensile strength and Rockwell B85 hardness, guaranteeing reliability in demanding applications.
